public class demol2 {
    public static void main(String[] args) {
        D d = new D();
    }
}
    class B{
        public B() {
            func();
        }

        public void func() {
            System.out.println("B.func()");
        }
    }

    class D extends B {
        private int num = 1;

        @Override
        public void func() {
            System.out.println("D.func()" + num);
        }
    }
